Indications of parthenogenesis and morphological differentiation in Hawaiian intertidal Fortuynia (Acari, Oribatida) populations

Pfingstl, Tobias; Baumann, Julia

doi:10.1016/j.jcz.2015.11.004

Cited by 8 publications

(10 citation statements)

References 18 publications

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“…Therefore, the frequency of successful dispersal events may be low and strongly depend on local sea current conditions and dispersal abilities of the respective species. Similar morphological differentiations were observed in intertidal oribatid mites from the Galapagos and the Hawaii archipelago and were suggested to be the results of restricted gene flow between the island populations (Pfingstl & Baumann, ; Pfingstl & Jagersbacher‐Baumann, ).…”

Section: Discussionsupporting

confidence: 57%

“…Size correction was done by dividing each variable through the geometric mean of the respective specimen (e.g. Jagersbacher‐Baumann, ; Pfingstl & Jagersbacher‐Baumann, ). All analyses were performed with PAST 3.11 (Hammer, Harper, & Ryan, ).…”

Section: Methodsmentioning

confidence: 99%

“…Some species are known to be island endemics, whereas others are distributed across large archipelagos and oceanic regions (Pfingstl & Schuster, ). In the latter case, populations from different islands or regions may show morphological diversification that is related to geographic distance between the landmasses and these divergences are supposed to indicate ongoing speciation processes due to restricted gene flow between populations (Pfingstl & Baumann, ; Pfingstl & Jagersbacher‐Baumann, ). How these tiny flightless arthropods disperse between the islands is still unknown but several authors argue that drifting along ocean currents is the most likely mode of long distance transport (Coulson, Hodkinson, Webb, & Harrison, ; Pfingstl, ; Schatz, ).…”

Section: Introductionmentioning

confidence: 99%

“…Apart from these systematic problems, the diversity of both families is largely underestimated as indicated by the recent discovery of numerous new species and genera from the Red Sea, the Eastern Pacific, the Indo‐Pacific, and the Caribbean area (e.g. Pfingstl, ; Pfingstl, Baumann, Lienhard, & Schatz, ; Pfingstl & Jagersbacher‐Baumann, ; Pfingstl & Schatz, ).…”

Section: Introductionmentioning

confidence: 99%

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Systematics, genetics, and biogeography of intertidal mites (Acari, Oribatida) from the Andaman Sea and Strait of Malacca

Pfingstl

Lienhard

Shimano

et al. 2018

J Zool Syst Evol Res

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This study demonstrates for the first time the presence of marine‐associated mites in the Andaman Sea and Strait of Malacca and reveals a relatively high diversity of these taxa with six species from two different families: Selenoribatidae and Fortuyniidae. Indopacifica , a new genus of Selenoribatidae, is described from Thailand and Malaysia, with two new species, Indopacifica pantai n. sp. and Indopacifica parva n. sp. The genus is characterized by the unique combination of following characters: lacking lamellar ridges, incomplete dorsosejugal suture, fourteen pairs of notogastral setae, and presence of epimeral foveae. A phylogenetic reconstruction based on 18S ribosomal RNA sequences clearly confirms the distinctness of the new genus Indopacifica and places it close to the genus Rhizophobates . The lack of molecular genetic data of possible relatives impedes a clear assessment, and hence, we emphasize the need for further combined approaches using morphological and molecular genetic sequence data. All species show wide distribution areas within this geographic region suggesting that these taxa are good dispersers despite their minute size and wingless body. Molecular genetic data demonstrate recent gene flow between far distant populations of I. pantai n. sp. from the coasts of Thailand and two islands of Malaysia and hence confirm this assumption. The seasonally changing surface currents within this geographic area may favor hydrochorous dispersal and hence genetic exchange. Nevertheless, morphometric data show a slight trend to morphological divergence among the studied populations, whereas this variation is suggested to be a result of genetic drift but also of habitat differences in one population of Alismobates pseudoreticulatus .

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Section: Discussionsupporting

confidence: 57%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Systematics, genetics, and biogeography of intertidal mites (Acari, Oribatida) from the Andaman Sea and Strait of Malacca

Pfingstl

Lienhard

Shimano

et al. 2018

J Zool Syst Evol Res

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“…Only during the last two decades research focused on other topics, such as ecology, dispersal and reproduction (e.g. Karasawa & Hijii 2004a, b;Pfingstl 2013b, c), and on other geographic regions, for instance the Eastern Pacific and the Caribbean (Schatz 1998;Pfingstl & Jagersbacher-Baumann 2016;Pfingstl & Schatz 2017).…”

Section: Introductionmentioning

confidence: 99%

New Fortuyniidae and Selenoribatidae (Acari, Oribatida) from Bonaire (Lesser Antilles) and morphometric comparison between Eastern Pacific and Caribbean populations of Fortuyniidae

Pfingstl

Baumann

Lienhard

et al. 2017

saa

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Two new intertidal oribatid mite species were found on the coast of Bonaire. Litoribates bonairensis sp. nov. can be distinguished from its only congener, L. caelestis, by the cerotegumental pattern and shape of sensillus. This is also the first record of the genus from the Caribbean region. Thasecazetes falcidactylus gen. nov., sp. nov. is characterized by conspicuous longitudinal notogastral ridges and sickle shaped claws and represents a new selenoribatid genus that probably shows a wider distribution within the Caribbean. Both species were found in mangrove habitats. An ecological preference for this environment may be considered. A morphometric investigation of Litoribates and Alismobates populations from the Galápagos Archipelago in the Eastern Pacific, several Caribbean areas and the Western Atlantic Bermuda Islands revealed certain remarkable facts: First, Litoribates species show a conspicuous higher size variation between the different locations than Alismobates species; second, the geographic distance between the populations is reflected in the extent of divergence and third, similar variation patterns shown in Litoribates and Alismobates indicate that both taxa have experienced similar evolutionary histories in the respective geographic regions. An additional molecular genetic analysis provides barcoding sequences for the new taxa and confirms their taxonomic distinctness.

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Convergent evolution of aquatic life by sexual and parthenogenetic oribatid mites

et al. 2016

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Convergent evolution is one of the main drivers of traits and phenotypes in animals and plants. Here, we investigated the minimum number of independent colonisations of marine and freshwater habitats in derived oribatid mites (Brachypylina), a mainly terrestrial taxon. Furthermore, we investigated whether the reproductive mode (sexual vs. thelytokous) is associated with the habitat type (marine, freshwater) where the animals live. We hypothesized that continuous resource availability in freshwater systems fosters asexual reproduction. We used 18S rDNA sequences to construct a molecular phylogeny of oribatid mites from terrestrial, marine and freshwater habitats. The results indicate that aquatic life in oribatid mites evolved at least 3×: once in Limnozetoidea (including only freshwater taxa) and at least twice in Ameronothroidea. In Ameronothroidea the taxon Ameronothridae n. gen. (nr. Aquanothrus) colonized fresh water independently from Selenoribatidae and Fortuyniidae (mainly marine Ameronothroidea). Reproductive mode was associated neither with marine nor with freshwater life; rather, in both habitats sexual and parthenogenetic taxa occur. However, the reproductive mode was related to the stability of the habitat. Species that live underwater permanently tend to be parthenogenetic whereas taxa whose life cycle is often interrupted by flooding, such as marine oribatid mites, or by desiccation, e.g., freshwater-living Ameronothridae n. gen. (nr. Aquanothrus) (Ameronothroidea) species, are mainly sexual, indicating that continuous access to resources indeed favours parthenogenetic reproduction. Findings of our study therefore suggest that parthenogenetic reproduction is not selected for by disturbances but by unlimited access to resources.

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Indications of parthenogenesis and morphological differentiation in Hawaiian intertidal Fortuynia (Acari, Oribatida) populations

Cited by 8 publications

References 18 publications

Systematics, genetics, and biogeography of intertidal mites (Acari, Oribatida) from the Andaman Sea and Strait of Malacca

Systematics, genetics, and biogeography of intertidal mites (Acari, Oribatida) from the Andaman Sea and Strait of Malacca

New Fortuyniidae and Selenoribatidae (Acari, Oribatida) from Bonaire (Lesser Antilles) and morphometric comparison between Eastern Pacific and Caribbean populations of Fortuyniidae

Convergent evolution of aquatic life by sexual and parthenogenetic oribatid mites

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